taylor swift, bruno mars and katy perry performed her hit song last night "roar." ♪ i got the eye of the tiger fire ♪ ♪ dancing through the fire ♪ cause i am a champion ♪ and you're going to hear me roar ♪ >> "roar" is up for the song of the year. the awards show airs january 26th. i am woman, hear me roar. >> i can't get that song out of my head. oh, i never let it in the first place. >> that's a good tactic. i like that. extreme weather alert. we want to get to the weather. serious weather out west yesterday. 11 people dead this morning after a winter storm packing snow, ice and cold temperatures hitting the united states. ice bringing down trees and power lines throughout texas. this 130-year-old tree snapped and fell on to a home early friday morning. no one was hurt. in missouri, some areas getting up to ten inches of snow while forecasters say the snow will stop and bitter cold temperatures are here to stay for a little while. >> i've got a great question on twitter earlier. does this cold weather mean that the arctic ice is going to form more during the winter? it wo